Conditional statement in .aspx page

I have a page where I am pulling data from a table and want to show contact information for everyone that is pulled. However, not everyone has all the information that I am going to show. In my code behind I have a dataset, setup public variables and then use them in my page. How can I make it so in the example below the word Email: ...... only shows if there is email information? Basically I need an If Else statement in my main page. Here is how I am getting the values from the table:

Wouldn’t it be nice if you could test whether an element is contained in an array by using a Contains method just like the one available on List objects? Wouldn’t it be good if you could write code like this?
(CODE)
In .NET 3.5, this is possible…

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